Incandescent-lamp socket.



No. 720,808. PATENTED FEB. 1'7, 1903. H. HUBBELL.

INGANDESCENT LAMP SOCKET.

APPLIGATLDN FILED MAY 26, 1902.

H0 MODEL.

WITNESSES. Iw 3 (2 1. 93M

m V Z UNITED STATES PATENT OFFICE.

HARVEY HUBBELL, OF BRIDGEPORT, CONNECTICUT.

mcANoEsoENT-LAMP SOCKET.

SPECIFICATION forming part of Letters Patent No. 720,808, dated February 17, 1903.

Application filed May 26,1902. Serial No. 108 955. [No model.)

To all whom it may concern.- to pass between the arms and the wall. The 50 Be it known that I, HARVEY HUBBELL, a arms are tapped for engagement by screws 12, citizen of theUnited States,residingatBridge which are provided with enlarged straightport, county of Falrfield, State of Connecticut, sided heads 13, the screws used being of the 5 have invented a new and useful Incandescenttype commonly known as fillister head Lamp Socket, of which the following is aspeciscrews. The holes in part A are ofjust suffi- 55 fication. cient size to receive the heads when the screws This invention relates to certain improveare turned inward. Part Bis provided in its ments in the mode of attaching the parts of edge with slots 14 of suflicient size to permit 10 incandescent-lamp sockets together. In inthe screws to pass and leading into holes 15,

candescent-lamp sockets as ordinarily conwhich are the same size as holes 10 in partA 6o structed the parts of the shell slide together and are adapted to register therewith. and are retained in the locked position either In use when the screws are turned outward by a bayonet-joint or by friction when the far enough so that the heads are clear of 15 screws are turned down or by means of slots, holes 15 in part B the parts may be readily holes, and spring-tongues, as in my former separated, as, the screws will pass freely 65 patent, No. 679,316, dated July 30, 1901. through the slots 14. To look the parts to- It is one of the objects of this invention to gether, it is simply necessary to turn the devise a mode of attaching together the parts screws inward slightly, so that the heads will of an incandescent-lamp socket which will pass into holes 15 in part B. In this position be quick in operation, will provide a rigid the parts are securely looked together and 70 lock until both screws are retracted,thereby cannot be separated until the screws are avoiding the possibility of slipping, as is comturned outward far enough so that the heads men when the parts are held by a bayonetwill clear the holes in part B.

joint or by friction, and will also hold the Having thus described my invention, I

parts immovably so that there can be no claim 75 rattling in use. Thecombination with 'a member having With these and other objects in view the openings formed therein and spring-arms loinvention consists in the construction and catedwithin said member and having threadarrangement of the parts, which will be hereed openings coinciding with said former openinafterdescribed and then specificallypointed ings, of screws working in the openings of So out in the claim hereunto appended. said arms and having heads adapted to fit In the accompanying drawings, forming .within the openings of said member, and a part of this specification, Figure 1 is an elesecond member having longitudinal slots 5 vation of an incandescent-lamp socket, showleading from its upper edge and terminating ing the two parts separated; Fig. 2, a secin circular enlargements corresponding in 85 tional view through the holes and slots, the size with the openings in said former memparts being united; Fig. 3, an inverted plan her, whereby when said second member is inview of the upper part detached; and Fig. 4.- serted between the wall of said first member 40 is a detail elevation of the upper part de and itsspring-arms and said screws are forced tached, the screw being removed. home, the heads of said screws will protrude go A and B denote the parts of an incandesinto theenlargements of the slots of said seccent-lamp socket. One of said parts-the 0nd member and serve to support the latter. upper part as shown in the drawings and In testimony whereof I affix my signature specifically indicated by Ais provided near in presence of two witnesses.

its edge with holes 10 and on its inner side HARVEY HUBBELL. with arms 11, which lie contiguous to the wall Witnesses: of thepart,bntseparatedtherefrom byaspace A. M. WOOsTER, sufficient to permit the upper edge of part B S. W. ATHERTON. 

